- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 31/00 - Free-piston pumps specially adapted for elastic fluidsSystems incorporating such pumps
Patent holdings for IPC class F04B 31/00
Total number of patents in this class: 40
10-year publication summary
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4
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3
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5
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5
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1
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2
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0
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2
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3
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gas Technology Institute | 358 |
4 |
| Endurance Lift Solutions, LLC | 34 |
3 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3028 |
3 |
| Board of Regents, The University of Texas System | 5658 |
2 |
| INFICON GmbH | 216 |
2 |
| New Fluid Technology Pty Ltd | 8 |
2 |
| Guangzhou Juneng Nano &bio Technology Co., Ltd. | 7 |
2 |
| Siemens AG | 24558 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4044 |
1 |
| Bicycle Tools Incorporated | 13 |
1 |
| Cooeperatie Avebe U.A. | 28 |
1 |
| Cooperatie Avebe U.A. | 74 |
1 |
| Engie | 177 |
1 |
| Fisher & Paykel Appliances Limited | 150 |
1 |
| Fu Tai Hua Industry (Shenzhen) Co., Ltd. | 311 |
1 |
| International Truck Intellectual Property Company, LLC | 462 |
1 |
| TRUMPF Werkzeugmaschinen GmbH + Co. KG | 558 |
1 |
| Westport Power Inc. | 125 |
1 |
| Whisper Tech Limited | 16 |
1 |
| Danfoss A/S | 1335 |
1 |
| Other owners | 9 |